Title :
Low complexity soft differential decoding of QPSK for forward error correction in coherent optic receivers
Author :
Kuschnerov, M. ; Calabrò, S. ; Piyawanno, K. ; Spinnler, B. ; Alfiad, M.S. ; Napoli, A. ; Lankl, B.
Author_Institution :
Univ. of the Fed. Armed Forces Munich, Munich, Germany
Abstract :
Coherent systems based on QPSK rely on differential encoding to avoid catastrophic error propagation. A simple solution for soft differential decoding is presented that limits the penalty after FEC to 0.75dB, similar to pre-FEC binary differential decoding.
Keywords :
decoding; encoding; forward error correction; optical receivers; quadrature phase shift keying; QPSK; catastrophic error propagation; coherent optic receivers; coherent systems; differential encoding; forward error correction; low complexity soft differential decoding; pre-FEC binary differential decoding; Bit error rate; Decoding; Encoding; Forward error correction; Iterative decoding; Phase shift keying; Quantization;
Conference_Titel :
Optical Communication (ECOC), 2010 36th European Conference and Exhibition on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-8536-9
Electronic_ISBN :
978-1-4244-8534-5
DOI :
10.1109/ECOC.2010.5621498
